html {
    position: relative;
    min-height: 100%;
}

body{
    padding-top: 70px;
    padding-bottom: 50px;
}

footer {
    position: absolute;
    bottom: 0;
    width: 100%;
}

.copyright {
    background-color: black;
    font-size: 15px;
    text-align: center;
    color: white;
    padding-top: 15px;
    padding-bottom: 15px;
}